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Finding the Fourth Proportional to 8,630.64, 12,942.77 and 3,082.50

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Solution

The fourth proportional to 8,630.64, 12,942.77 and 3,082.50 is: 4,622.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,630.64 : 12,942.77 = 3,082.50 : x
  2. Step 2: Convert to fraction form
    8,630.64/12,942.77 = 3,082.50/x
  3. Step 3: Cross multiply
    8,630.64x = 12,942.77 × 3,082.50
  4. Step 4: Simplify right side
    8,630.64x = 39,896,073.11
  5. Step 5: Solve for x
    x = 39,896,073.11/8,630.64
  6. Step 6: Final answer
    x = 4,622.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.